MAX871EUK+TG002 Maxim Integrated Products, MAX871EUK+TG002 Datasheet - Page 4

• Manufacturer Part Number: MAX871EUK+TG002
• Description: IC VOLTAGE INV SWCAP SOT23-5
• Manufacturer: Maxim Integrated Products

Specifications of MAX871EUK+TG002

• Applications: Charge Pump, LCD
• Voltage - Input: 1.4 ~ 5.5 V
• Number Of Outputs: 1
• Voltage - Output: -1.4 ~ -5.5 V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-5, SC-74A, SOT-25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Switched-Capacitor Voltage Inverters
_____________________Pin Description
4
(Circuit of Figure 1, V
____________________________Typical Operating Characteristics (continued)
PIN
100
90
80
70
60
50
40
30
20
10
1
_______________________________________________________________________________________
2
3
4
5
0
0
EFFICIENCY vs. OUTPUT CURRENT
5
NAME
GND
10 15 20
OUT
C1+
C1-
V
IN
IN
V
20mV/div, AC COUPLED
OUTPUT CURRENT (mA)
IN
= 2.0V
= 3.3V, V
MAX870
OUTPUT NOISE AND RIPPLE
IN
V
25 30 35
IN
OUT
Inverting Charge-Pump Output
Positive Power-Supply Input
Flying Capacitor’s Negative Terminal
Ground
Flying Capacitor’s Positive Terminal
= +5V, C1 = C2 = C3, T
= 3.3V
= -3.18V, I
MAX870
2µs/div
V
40
IN
OUT
= 5.0V
45
FUNCTION
= 5mA,
50
90
80
70
60
50
40
30
20
10
A
0
= +25°C, unless otherwise noted.)
0
EFFICIENCY vs. OUTPUT CURRENT
5
V
10
IN
OUTPUT CURRENT (mA)
= 2.0V
15
MAX871
20
Figure 1. Test Circuit
25
V
IN
= 3.3V
*1µF
30
(MAX870)
V
IN
= 5.0V
35
40
V
20mV/div, AC COUPLED
1
2
3
IN
VOLTAGE INVERTER
C1-
OUT
= 3.3V, V
IN
600
550
500
450
400
350
300
250
200
150
100
OUTPUT NOISE AND RIPPLE
MAX870
MAX871
OUT
-40
PUMP FREQUENCY vs. TEMPERATURE
V
V
= -3.14V, I
0.33µF*
IN
IN
GND
C1+
MAX871
= 1.5V, MAX871
= 1.5V, MAX870
1µs/div
C3
-15
5
4
OUT
TEMPERATURE (°C)
V
V
IN
= 5mA,
IN
C2
0.33µF*
10
= 3.3V OR 5.0V, MAX870
= 3.3V OR 5.0V, MAX871
35
R
L
C1
0.33µF*
V
V
OUT
IN
60
85